Do you find that you are able to reach a temperature of 290F without the color getting to where it looks almost black in the jar when finished? I made the syrup twice, because I was skeptical about how dark it looked in the jar the 1st time. The second time making it, I stopped it a few degrees cooler (around 287F), and checked the color of a drop on a piece of foil just like the color chart posted in the candy syrup thread for each temp. The drop was definitely right between the 280F and 290F syrup color on that chart, but the full batch still looks nearly black when i put it all in a glass jar. I don't know what color syrup is the best for this beer having only made one batch, but I'm fairly confident that 290F should be quite dark and definitely not transparent when looking at the full batch in the glass jar. D-45 syrup is just as dark and is supposed to have a lot of caramel/vanilla flavor, rather then the raisin/plum flavors you'd get from the D-90 and darker ones. I don't think I had anything resembling quad-like flavors in my finished beer, but I'd definitely be interested to know the results if anyone has experimented with different syrup temps with this beer.